Tiny correction to documentation for observe

docs/api/Mixin.md

@@ -9,7 +9,7 @@ At mount time, the initial `props` and `state` are passed as function parameters
 Each successive time, the upcoming `props` and `state` are passed as parameters.
 This is because the method is called from `componentWillUpdate`.
 This method should return an object of key/value pairs, where each key denotes
-the name of a subscription, and each key is a Parse Query or
+the name of a subscription, and each value is a Parse Query or
 [Local Subscription](/docs/api/LocalSubscriptions.md).
 
 Additionally, it adds the following methods to the component:
@@ -27,4 +27,4 @@ Forces a query to fetch new results. If `queryNames` is not provided, it will
 check the status of every query attached to this object.
 
 - `queryNames` (optional): A query name, or array of query names. The queries
-with those names will be refreshed.
+with those names will be refreshed.